After digging thru a lot of rules and regulations and wearing out Google translate, it is my considered opinion that an auto, as long as it meets certain qualifications, can be imported or nationalized at the Guad airport.
The customs book says that a car can be imported by paying the fees and getting the inspections at any port of entry. Guad airport is listed as a port of entry.
All the air freight that comes into Guad from out of country clears customs at Guad.
Why is no one doing this? When would anyone ship a used car into MX on a plane? The freight would be horrible.
As far as I can tell, here is what is required:
You have to present paperwork to customs with a bunch of info including copy of title, some info on when and where it was manufactured, copy of vin on the door and maybe a few other things.
Then customs checks it (may take a few days), then it has to be physically inspected.
Once you get a receipt for the inspection, you get a bill, go pay it, get a receipt and bring it all back to get your final paperwork.
I think it can be done without a broker but it may pay to find a broker to do all the shuffling.
I need someone who speaks great Spanish to go to the airport, find the air freight section and find a broker (they generally have offices right there or close) or someone in customs and see if this is not possible.